In the snmptrapd.conf trap configuration file you define 2 pieces of information that
tells snmptrapd how to direct the incoming traps: the OID of the incoming trap and
the location of the traphandler to pass the incoming trap information to including any arguments
you want passed to the trap handler.

In this configuration file the same trap handler is used in all 4 lines uncommented line, but
based on the trap OID different arguments are passed to allow the trap handler to react in
different ways. If you supply the OID in numeric format it is wide to add a comment
describing the traps MIB name. The final line uses the keyword "default" instead of an OID,
which acts as a catch all to handle any traps that weren't processed by an earlier trap handler.